Analysis
- max time kernel
22s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
07/01/2024, 04:20
General
- Target toolspub1.exe
- Size 300KB
- Sample240107-eycgrsfdg9
- SHA256 2739b41aab3ff3cc0727ada7ad04162f0379ef151c7d4b4296e963a2a74891c5
Malware Config
Extracted
-
smokeloader
-
pub1
Extracted
-
smokeloader
-
2020
-
http://host-file-host6.com/
-
http://host-host-file8.com/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Deletes itself 1 IoCs
- Executes dropped EXE 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Program crash 2 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 16 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 3682⤵
- Program crash
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2896 -ip 28961⤵
-
C:\Users\Admin\AppData\Local\Temp\9E72.exeC:\Users\Admin\AppData\Local\Temp\9E72.exe1⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe2⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2356 -s 11523⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"1⤵
-
C:\Users\Admin\AppData\Local\Temp\A307.exeC:\Users\Admin\AppData\Local\Temp\A307.exe1⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2356 -ip 23561⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1972-64-0x0000000072D80000-0x0000000073497000-memory.dmp
memory/1972-58-0x0000000072D80000-0x0000000073497000-memory.dmp
memory/2356-59-0x0000000001000000-0x00000000010C4000-memory.dmp
memory/2356-60-0x0000000004870000-0x0000000004872000-memory.dmp
memory/2356-63-0x0000000001000000-0x00000000010C4000-memory.dmp
memory/2356-62-0x0000000000390000-0x00000000007C3000-memory.dmp
memory/2356-28-0x0000000001000000-0x00000000010C4000-memory.dmp
memory/2356-30-0x0000000001000000-0x00000000010C4000-memory.dmp
memory/2356-24-0x0000000000390000-0x00000000007C4000-memory.dmp
memory/2356-26-0x0000000000390000-0x00000000007C4000-memory.dmp
memory/2896-7-0x0000000000400000-0x0000000000451000-memory.dmp
memory/2896-1-0x00000000005F0000-0x00000000006F0000-memory.dmp
memory/2896-2-0x00000000021A0000-0x00000000021A9000-memory.dmp
memory/2896-3-0x0000000000400000-0x0000000000451000-memory.dmp
memory/3436-4-0x00000000027D0000-0x00000000027E6000-memory.dmp
memory/4164-14-0x0000000000010000-0x000000000006D000-memory.dmp
memory/4164-17-0x0000000002640000-0x000000000264D000-memory.dmp
memory/4164-35-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/4164-34-0x0000000002820000-0x0000000002821000-memory.dmp
memory/4164-18-0x0000000077844000-0x0000000077845000-memory.dmp
memory/4164-19-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/4164-21-0x0000000002800000-0x0000000002801000-memory.dmp
memory/4164-22-0x0000000002830000-0x000000000283C000-memory.dmp
memory/4164-23-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/4164-16-0x0000000002280000-0x00000000022E6000-memory.dmp
memory/4676-39-0x0000000000A00000-0x0000000000F96000-memory.dmp
memory/4676-46-0x0000000000A00000-0x0000000000F96000-memory.dmp